Thomas ellwood buckman



(No Model.)

T. E. BUGKMAN.

CAR COUPLING.

Patented May .13, 1884.

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ihvirn THOMAS ELLWOOD BUCKMAN, OF JACKSONVILLE, FLORIDA.

CAR-COUPLING.

SPECIFICATION forming part of Letters Patent No. 298,445, dated May 13, 1884.

Application filed September. 1'7, 1883.

To t whom 222% may concern.-

Be it known that I, THOMAS E. BUOKMAN, of Jacksonville, in the county of Duval and State of Florida, have invented a new and Improved Oar-Coupling, of which the following is a full, clear, and exact description.

The object of the invention is to improve car-couplings, as hereinafter described, and pointed out in the claims. v

Reference is to be had to the accompanying drawings, forming partof this specification, in which similar letters of reference indicate corresponding parts in all the figures.

Figure l is a longitudinal sectional elevation of my improved car-coupling, showing a link held therein. Fig. 2 is a sectional plan view of the same. Fig. 3 is a longitudinal elevation of the same, showing it uncoupled, and also showing the cam as when turned up to raise the locking-block. Fig. 4 is a cross-sectional elevation of the same on the line :20, Fig. 2. Fig. 5 is a like section, showing the pawls under the locking-block. Fig. 61s a detailview of the pendulum-pawl.

The draw-head A, which has a longitudinal slot, A, or opening in its bottom at the outer end, is held to slide between two guide-plates, 13, secured to the car-bottom. The draw-head is provided on its bottom with an apertured lug, 0, through which a rod, D, passes, which is surrounded by a compression spiral spring, E, which presses the draw-head toward the end of the car. A coupling-hook pin, F, provided at its free end with an upwardly-proj ecting prong, F, is pivoted in the draw-head,

and is adapted to swing in the slot A. The under side of the top of the draw-head is provided with a recess, F for receiving the upper end of the prong F. A rocking shaft, G, at right angles to the draw-head, is journaled in the side plates, 13, and extends to the side of the car, where it is also suitably journaled, and passes through longitudinal slots H in the draw head. The shalt G is provided at its outer end with a handle=lever, G, which is locked in place by a pendulum-pawl, J, pivoted to the side-of the car. A cam projection, K, is formed within the draw-headon the shaft G. A flat block, L, is provided with aspindle, M, at its rear end, which spindle is sur- (No model.)

rounded by a spiral spring, N, held between a collar, 0, formed at the inner end of the block L, and a collar, P, through which the spindle M passes loosely. The collar P is provided with laterallyprojecting pivots a, which pass through longituc'linal slots d in the sides of the draw-head, and into longitudinal slots 9 in the inner sides of the plates B. Pawls Q are held in recesses R in the inner surfaces of the plates 13, and are provided at the upper ends with flanges Q, which project into and through the slots H. The anges Q are beveled at their front and rear ends. at the outer ends and at the bottom edges with a cross-plate, S, upon which the draw-head rests. The rear end of the draw-head is provided with an aperture, T, having rounded edges, to permit of the inclination of the spindle M, which passes through it. The top and bottom of the draw-head are open, except at the front end.

The operation is as follows: If the drawheads come together, the link U enters the draw-head A, and when the end of the said draw-head is struck by the opposite drawhead, the draw-head A will be pushed in the inverse direction of the arrow a and the front edge of the plate S swings the coupling-hook pin F upward and through the link U, whereby the cars are coupled automatically. At the same time the front ends of the slots at strike the pivots a and move the collarP, the spindle M, and the block L in the inverse direction of the arrow a, and the block L drops and catches behind the shaft G and preventsthe spring E The plates B are united from pushing the draw-head in the direction of the arrow c, and securely locking the coupling. If the cars are to be uncoupled, the handle-lever G is swung into the vertical position, and is then thrown down again and is locked automatically by the pendent pawl J. By swinging the lever G upward, the shaft G is turned in such a manner that the cam K passes under the free end of the block L and moves the same upward, so that it can slide over the shaft G, and the spring E can then push the draw-head in the direction of the arrow a, and the coupling-hook pin can move beyond the plate S, so that it can drop, whereby the cars will be uncoupled. As soon as the block L is swung upward, the pawls Q swing toward each other and under the block L, which is supported by the flanges Q, until, by the separation of the cars, the draw-head is free to be projected by the spring N, and the collar 0 strikes the rear beveled parts of the flanges Q and pushes the pawls Q into the recessesR again. \Vhen it (the draw-head) is pushed inward in the inverse direction of the arrow a, the collar O strikes the forward beveled parts of the flanges Q, and pushes the pawls Q back into the recesses R, to permit the block L to drop. The spring N presses the end of the block L toward the shaft G, a cross-pin, n, in the end of the spindle M preventing the said spring from pressing the block L too far in the abovementioned direction. The springNis the ordinary buffer-spring used on cars.

Having thus fully described my invention, I claim as new and desire to secure by Letters Patent 1. In a car-coupling, the combination of the draw-head A, rear apertured at T, and having slots (1 H, the sides B B, having flanges Q, inner recesses, R, and slots 9, the shaft G, having outer arm, G, and cam K, the block L, having a rear spindle, M,- collar 0, and spring N, the journaled collar 1?, and the pawls Q, as and for the purpose described.

2. The combination, with a rod, D, surrounded by a spiral spring, E, and placed below the draw-head, of the apertured lug C, arranged on the bottom of the draw-head, as and for the purpose specified.

3. The combination, with a sliding drawhead, A, of the upwardly-swinging hook F, the shaft G, provided with a cam projection, K, the swinging locking-block L, the pawls Q, the spring E, and the cross-plate S, substantially as herein shown and described.

4. The combination, with the sliding draw head A, of the upwardly-swinging hook F, the shaft G, provided with a cam projection, K, the block L, having a spindle, M, the collars O and P, of which the latter is provided with pivots a, the spring N, the spring E, and the cross-plate S, substantially as herein shown and described.

, 5. The combination, with the sliding drawhead, A, of the upwardly-swinging hook F, the shaft G, having a cam projection, K, the block L, the spindle M, the spring N, the pawls Q, heldin recesses R in the plates B at the sides of the draw-head, the cross-plate S, and the spring E, substantially as herein shown and described.

6. The combination, with the pivoted hookcoupler F. and bottom S, having slot A, of the draw-head A, projecting beyond the hook and havingin the top a recess, F, to receive the hook-point, as shown and described.

7. The combination, with the sliding drawhead A, having slots H, of the side plates, B, having recesses R, the pawls Q, held in the recesses, the swinging hook F, the shaft G, provided with a cam projection, K, and a swinging block for locking the sliding draw-head in place, substantially as herein shown and described. V

S. The combination, with a sliding drawhead, of an upwardly-swinging hook pivoted in the same, the shaft G, a swinging lockingblock adapted to catch on the shaft and lock the draw-head in place, the handle-lever G,

and thependulum-pawl J, substantially as herein shown and described.

. THOMAS ELLWOOD BUCKMAN.

\Vitnesses:

WILLIAM LAW, 0. BUCK-MAN. 

